Statistical Algorithms Importer: R-blackbox Project

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This page explains how to create a R-blackbox project using the Statistical Algorithms Importer (SAI) portlet.
R-blackbox Project, SAI

Project Configuration

Define project's metadata
R-blackbox Info, SAI
Add input and output parameters and click on "Set Code" to indicate the main file to execute (i.e. the .r file)
R-blackbox I/O, SAI
Add information about the running environment (e.g. R version etc.)
R-blackbox Interpreter, SAI
After the software creation phase a Main.R file and a Taget folder are created
R-blackbox Create, SAI

Example Code

R code in sample:
# author Giancarlo Panichi

Example Download

Inheritance of Global and Infrastructure Variables

at each run of the process the globalvariables.csv file is created locally to the process (i.e. it can be read as ./globalvariables.csv), which contains the following global variables that are meant to allow the process to properly contact the e-Infrastructure services:

  • gcube_username (the user who run the computation, e.g. gianpaolo.coro)
  • gcube_context (the VRE the process was run in, e.g.
  • gcube_token (the token of the user for the VRE, e.g. 1234-567-890)

The format of the CSV file is like the one of the following example: